J Neurogastroenterol Motil.
2017 Oct;23(4):606-615. 10.5056/jnm16201.
The Effect of Deoxycholic Acid on Secretion and Motility in the Rat and Guinea Pig Large Intestine
- Affiliations
-
- 1Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University College of Medicine, Seoul, Korea. pjho3@hotmail.com
- 2Department of Electronics and Control Engineering, Hanbat National University, Daejeon, Korea.
- KMID: 2395430
- DOI: http://doi.org/10.5056/jnm16201
Abstract
- BACKGROUND/AIMS
Bile acid is an important luminal factor that affects gastrointestinal motility and secretion. We investigated the effect of bile acid on secretion in the proximal and distal rat colon and coordination of bowel movements in the guinea pig colon.
METHODS
The short-circuit current from the mucosal strip of the proximal and distal rat colon was compared under control conditions after induction of secretion with deoxycholic acid (DCA) as well as after inhibition of secretion with indomethacin, 1,2-bis (o-aminophenoxy) ethane-N,N,N"²,N"²-tetra-acetic acid (an intracellular calcium chelator; BAPTA), and tetrodotoxin (TTX) using an Ussing chamber. Colonic pressure patterns were also evaluated in the extracted guinea pig colon during resting, DCA stimulation, and inhibition by TTX using a newly developed pressure-sensing artificial stool.
RESULTS
The secretory response in the distal colon was proportionate to the concentration of DCA. Also, indomethacin, BAPTA, and TTX inhibited chloride secretion in response to DCA significantly (P < 0.05). However, these changes were not detected in the proximal colon. When we evaluated motility, we found that DCA induced an increase in luminal pressure at the proximal, middle, and distal sensors of an artificial stool simultaneously during the non-peristaltic period (P < 0.05). In contrast, during peristalsis, DCA induced an increase in luminal pressure at the proximal sensor and a decrease in pressure at the middle and distal sensors of the artificial stool (P < 0.05).
CONCLUSIONS
DCA induced a clear segmental difference in electrogenic secretion. Also, DCA induced a more powerful peristaltic contraction only during the peristaltic period.
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- Localization and Morphology of Serotonin Cells in Intestinal Gland of Rodents
- Effects of ryanodine on the intracellular Na+ activity and tension and action potentials of rat and guinea pig cardiac ventricular muscles
- Exophthalmos Inhibitory Effect of Anti-EPS Serum
- Investigation into the Effects of Mosapride on Motility of Guinea Pig Stomach, Ileum, and Colon
- Immunocytochemical Expression of Amylin in Pancreatic Islets of Man, Rabbit and Guinea Pig
